# 865 Customz

> Jet ski and personal watercraft repair shop in Friendsville, Tennessee. Sea-Doo, Yamaha WaveRunner, and Kawasaki service for Maryville, Knoxville, Alcoa, Lenoir City, Oak Ridge, Sevierville, Pigeon Forge, and East Tennessee.

The shop is at 3709 Big Springs Ridge Rd, Friendsville, TN 37737. Call 865-257-5998 or email 865customz@gmail.com. Hours are Monday-Friday 9am-5pm. Saturday and Sunday are closed. Service is by appointment. Work includes engine rebuilds, carburetor service (including mail-in), diagnostics, key programming, electrical, pump and driveline, Sea-Doo supercharger rebuilds, machining, and 3D printing and scanning. Repair work is warrantied for 30 days.

Current prices are on the service pages. Prices in older news posts are past promotions.

## Contact

- [Home](https://www.865-customz.com/): Shop overview, brands serviced, and phone number
- [Contact](https://www.865-customz.com/contact): Phone, email, address, and hours
- [Service request](https://www.865-customz.com/service-request): Form to describe a Sea-Doo, Yamaha, or Kawasaki problem and schedule a drop-off
- [FAQ](https://www.865-customz.com/faq): Service area, appointments, mail-in service, rebuild timing, and summerization
- [Service areas](https://www.865-customz.com/locations): Knoxville, Maryville, Friendsville, and other East Tennessee towns served

## Services

- [Watercraft service](https://www.865-customz.com/service/watercraft-service): Full-service Sea-Doo, Yamaha WaveRunner, and Kawasaki repair
- [Jet ski repair](https://www.865-customz.com/service/jet-ski-repair): Jet ski repair for Maryville, Knoxville, and East Tennessee, with a 30-day warranty
- [Engine rebuilds](https://www.865-customz.com/service/engine-rebuilds): 2-stroke and 4-stroke rebuilds for Sea-Doo Rotax, Yamaha, and Kawasaki, from top-ends to full rebuilds
- [Mail-in carburetor service](https://www.865-customz.com/service/carburetor-service): Mikuni rebuilds with genuine kits and ultrasonic cleaning, 3-4 day turnaround, shipped from anywhere in the US
- [Diagnostics](https://www.865-customz.com/service/diagnostics): Fault-code scanning, compression tests, electrical checks, and lake testing
- [Electrical](https://www.865-customz.com/service/electrical): Voltage and grounding problems, fouled spark plugs, and component failure
- [Key programming](https://www.865-customz.com/service/watercraft-key-programming): Sea-Doo DESS key coding, Yamaha key fobs, and replacement keys
- [Pump and driveline](https://www.865-customz.com/service/pump-driveline): Wear rings, impellers, carbon seals, bearing carriers, and driveshafts
- [Sea-Doo supercharger rebuilds](https://www.865-customz.com/service/seadoo-supercharger): Bearing and washer replacement to prevent failure, with mail-in available
- [Maintenance](https://www.865-customz.com/service/maintenance): Oil changes, flushing, corrosion prevention, fuel tips, and a pre-launch checklist
- [Summerization](https://www.865-customz.com/service/summerization): Seasonal return to service with oil, filter, plugs, battery, and coolant checks (most models $240)
- [Machining](https://www.865-customz.com/service/machining-services): Cylinder honing, boring, sleeving, head resurfacing, and billet accessories
- [3D printing, scanning, and machining](https://www.865-customz.com/service/3d-printing-scanning-machining): FDM printing, reverse engineering, CNC machining, and laser marking

## Technical references

- [Sea-Doo P-code list](https://www.865-customz.com/tech-info/sea-doo-p-code-list): Searchable BRP P-codes and fault codes by system, with a fuse cross-reference
- [Yamaha WaveRunner fault codes](https://www.865-customz.com/tech-info/yamaha-fault-code-list): Searchable Yamaha ECU codes for sensors, electronic throttle, RiDE, and oil pressure
- [Sea-Doo torque specs](https://www.865-customz.com/tech-info/sea-doo-torque-specs): Torque values for 4-TEC, 787, and 951 engines
- [Yamaha torque specs](https://www.865-customz.com/tech-info/yamaha-torque-specs): Torque values for MR-1, TR-1, 1.8L, and 1.8L SHO
- [Carburetor specs](https://www.865-customz.com/tech-info/carburetor-specs): Sea-Doo and Yamaha 2-stroke Mikuni jet sizes, needle settings, and pop-off pressure
- [Sea-Doo wiring diagrams](https://www.865-customz.com/tech-info/seadoo-wiring-diag): DESS, MPEM, ignition, starter, and accessory schematics
- [865 Videos](https://www.865-customz.com/tech-info/865-videos): Shop videos on jet ski repair, Sea-Doo 4-TEC systems, and WaveRunner rebuilds

## Guides

- [News and articles](https://www.865-customz.com/news): Index of all repair write-ups, how-tos, and shop news
- [Used watercraft buyers guide](https://www.865-customz.com/news/watercraft-buyers-guide): What to look for and avoid, and how much to spend on a used Sea-Doo, Yamaha, or Kawasaki
- [How to winterize a watercraft](https://www.865-customz.com/news/how-to-winterizing-your-watercraft): Drain, flush, fog, and stabilize
- [How to save a sunk Sea-Doo GTI](https://www.865-customz.com/news/saving-a-sunk-gti): Video on removing water from the engine after a sinking
- [Ethanol fuel and watercraft engines](https://www.865-customz.com/news/ethanol-fuel-how-it-affects-your-watercraft-engine): Phase separation, E10 risks, and fuel tips
- [Ethanol vs. pure gas](https://www.865-customz.com/news/ethanol): How phase separation damages jet ski and boat engines
- [100% gas or ethanol](https://www.865-customz.com/news/100-gas-or-ethanol-fuel-for-your-boat-and-jet-ski): Choosing fuel for a boat or jet ski
- [Jet ski that has been sitting](https://www.865-customz.com/news/jetski-has-been-sitting-for-a-while): Gummy fuel and carburetor debris causing starting and running problems
- [Gas fumes are dangerous](https://www.865-customz.com/news/gas-fumes-are-dangerous): A Sea-Doo split at the bond line from fumes after sitting at the dock
- [Spring charging system and battery maintenance](https://www.865-customz.com/news/spring-service-charging-system-and-battery-maintenance): Battery and charging checks before the season
- [Shallow water and wear rings](https://www.865-customz.com/news/seadoo-wake-wear-ring-in-shallow-water): Why to keep at least 2 ft of water under a ski to protect the pump

## Sea-Doo repairs

- [4-TEC oil system video](https://www.865-customz.com/news/sea-doo-4-tec-oil-system-video): How the 4-TEC engine delivers and circulates oil
- [4-TEC oil system](https://www.865-customz.com/news/seadoo-4-tec-oil-system): Oil system on all Sea-Doo 4-TEC engines
- [4-TEC cooling system video](https://www.865-customz.com/news/sea-doo-4-tec-cooling): How the GTX, RXT, and RXP 4-TEC cooling system prevents overheating
- [Supercharger rebuild interval](https://www.865-customz.com/news/sea-doo-supercharger-rebuild-interval): When to rebuild the 4-TEC supercharger on RXP, RXT, and GTX
- [Supercharger rebuild service](https://www.865-customz.com/news/sea-doo-supercharger-rebuild-service): Bearing replacement and mail-in supercharger rebuilds
- [Supercharger destruction](https://www.865-customz.com/news/seadoo-supercharger-destruction): Photos of Rotax supercharger bearing and gear failure
- [Destroyed supercharger impeller](https://www.865-customz.com/news/destroyed-sea-doo-supercharger-impeller): Bearing failure let the impeller rub the housing on a ski under 100 hours
- [Supercharger gear in the case](https://www.865-customz.com/news/seadoo-supercharger-gear-in-the-case): Bent supercharger shaft, missing gear, and destroyed flywheel teeth
- [4-TEC supercharger gear failure](https://www.865-customz.com/news/seadoo-4-tec-supercharger-gear-failure): Failure from a wrong-tooth gear installed during a rebuild
- [4-TEC cylinders after supercharger failure](https://www.865-customz.com/news/sea-doo-4-tec-cylinders-after-a-supercharger-failure): Cylinder damage left by a failed supercharger
- [4-TEC intercooler full of oil and water](https://www.865-customz.com/news/seadoo-4-tec-intercooler-full-of-oil-and-water): Contamination traced to supercharger seals
- [Intercooler leak](https://www.865-customz.com/news/sea-doo-intercooler-leak): 4-TEC intercooler leak diagnosis and repair
- [4-TEC burning oil and smoking](https://www.865-customz.com/news/seadoo-4-tec-burning-oil-and-smoking): A Sea-Doo 4-TEC burning oil and smoking
- [GTX 4-TEC oil leak](https://www.865-customz.com/news/seadoo-gtx-4tec-oil-leak): Oil leak at mid-to-high RPM fixed with a rear driveshaft seal
- [RXP oil leak](https://www.865-customz.com/news/sea-doo-rxp-oil-leak): 2006 RXP oil leak under the motor after supercharger service
- [4-TEC failure from the Bendix](https://www.865-customz.com/news/sea-doo-4tec-failure-caused-by-a-bendix-failure): Bendix needle bearings ending up in the oil pumps
- [4-TEC intake after sinking](https://www.865-customz.com/news/sea-doo-4tec-intake-after-ski-has-sunk): Cleaning the intake after a ski has sunk
- [Crankshaft bearing failure](https://www.865-customz.com/news/seadoo-crankshaft-bearing-failure): Crank bearing failure and engine rebuild
- [RX 787 lower rod bearings](https://www.865-customz.com/news/sea-doo-rx-787-with-bad-lower-rod-bearings): Failed lower rod bearings on an RX 787
- [717 overheat failure](https://www.865-customz.com/news/seadoo-717-overheat-failure): Piston damage from overheating
- [951 rusted after sinking](https://www.865-customz.com/news/sea-doo-951-rusted-865-customz): A 951 left sunk over winter, rust repair and rebuild
- ['95 XP running lean](https://www.865-customz.com/news/95-seadoo-xp-running-lean): Missing or brittle oil lines on 2-stroke Sea-Doos
- [Fuel delivery problems](https://www.865-customz.com/news/seadoo-fuel-delivery-problems): Carbureted 2-stroke that revs out of the water but not in it
- [GTX DI fuel pump](https://www.865-customz.com/news/seadoo-gtx-di-fuel-pump): Ski that ran until warm then shut down
- ['06 GTX cavitation](https://www.865-customz.com/news/06-seadoo-gtx-cavitation): A rock in the pump, wear ring replacement, and cavitation burns on the impeller
- [Cavitation problems](https://www.865-customz.com/news/sea-doo-cavitation-problems): What causes cavitation and how wear ring and impeller repair fixes it
- [Jet boat cavitation](https://www.865-customz.com/news/seadoo-jet-boat-cavitation): Debris-damaged impeller on a Sea-Doo jet boat
- [GTI SE wear ring](https://www.865-customz.com/news/seadoo-gti-se-wear-ring): A ski rope from the Tennessee River pulled into the pump of a 2006 GTI SE
- [Spark impeller damage from rocks](https://www.865-customz.com/news/seadoo-spark-impeller-damage-from-rocks): Pump damage from starting in shallow water
- [Spark drive shaft splines](https://www.865-customz.com/news/sea-doo-spark-drive-shaft-splines): Spline wear on the Spark drive shaft
- [Spark hull repair](https://www.865-customz.com/news/sea-doo-spark-hull-repair): Fiberglass and gel coat repair on a Spark
- [Spark siphon tube 267000782](https://www.865-customz.com/news/seadoo-spark-siphon-tube-267000782): Spark siphon tube part 267000782
- [RXT-X hull destruction](https://www.865-customz.com/news/seadoo-rxtx-hull-destruction): Hull damage from a shallow-water accident
- [Gel coat restoration](https://www.865-customz.com/news/seadoo-gel-coat-restoration): Restoring faded Sea-Doo gel coat
- [Starter clicking or ticking](https://www.865-customz.com/news/sea-doo-ticking-noise-when-you-press-the-start-button-replace-the-solenoid): A ticking noise at the start button usually means a bad solenoid
- [Aftermarket vs. OEM starter](https://www.865-customz.com/news/aftermarket-sea-doo-starter-vs-o-e-m): Why cheap aftermarket starters often fail within a year or two, and why water in the hull kills starters
- [Key replacement or lost key](https://www.865-customz.com/news/sea-doo-key-replacement-or-lost-key): Replacing and programming a lost DESS key
- [Lanyard programming](https://www.865-customz.com/news/sea-doo-lanyard-programming): Sea-Doo DESS lanyard programming
- [Cluster and iBR updates](https://www.865-customz.com/news/we-now-have-the-ability-to-update-clusters-and-ibr-systems-on-seadoo): Instrument cluster and iBR software updates

## Yamaha repairs

- [TR-1 started with water in the engine](https://www.865-customz.com/news/yamaha-tr1-started-with-water-inside-engine): Water on the pistons, oil-water emulsion, and block damage
- [GP1200R engine rebuild part 1 video](https://www.865-customz.com/news/yamaha-waverunner-rebuild-video-1): Full teardown walkthrough
- [GP1200R rebuild part 1](https://www.865-customz.com/news/yamaha-gp1200r-rebuild-part-1): First part of a GP1200R rebuild
- [GPR1200 rebuild](https://www.865-customz.com/news/yamaha-gpr1200): GPR1200 engine teardown
- [GPR1200 piston destroyed](https://www.865-customz.com/news/gpr1200-piston-destroyed): Piston failure and rebuild
- [GPR1200 microfilter](https://www.865-customz.com/news/gpr1200-microfilter): A plugged microfilter making the ski run lean
- [GPR1200 catalytic converter failure](https://www.865-customz.com/news/yamaha-gpr1200-catalytic-converter-failure): Mesh blockage, exhaust restriction, and overheating
- [GP800 and GP1200 fuel](https://www.865-customz.com/news/yamaha-gp800-1200-fuel): Bogging from cracked fuel pump diaphragms
- [Superjet carburetors](https://www.865-customz.com/news/yamaha-superjet-carburetors): Bogging from an incorrect pop-off spring
- [760 piston destruction](https://www.865-customz.com/news/yamaha-760-piston-destruction): An engine knock that destroyed the crank and cases
- [760 electrical issues and engine seizing](https://www.865-customz.com/news/yamaha-760-electrical-issues-engine-seizing): Electrical faults and a seized 760
- [FX Cruiser engine failure](https://www.865-customz.com/news/yamaha-fx-cruiser-engine-failure): Diagnosis and rebuild
- [FX Cruiser oil light](https://www.865-customz.com/news/yamaha-fx-cruiser-oil-light): An oil light on an '08 FX Cruiser cleared by repeated oil changes
- [FX Cruiser oil leak](https://www.865-customz.com/news/yamaha-fxcruiser-oil-leak): Leaks from the block drain and oil pump housing
- [FX Cruiser rusty cylinders](https://www.865-customz.com/news/yamaha-fx-cruiser-with-rusty-cylinders): Bore service on a water-damaged engine
- [XL1200 head gasket](https://www.865-customz.com/news/yamaha-xl1200-head-gasket): A blown head gasket causing low compression and water in the cylinder
- [VX110 gasket leak](https://www.865-customz.com/news/yamaha-vx110-gasket-leak): VX110 gasket leak repair
- [Start/stop switch malfunction](https://www.865-customz.com/news/yamaha-start-stop-switch-malfunction): Corroded switch panels causing no-start problems

## Kawasaki repairs

- [Ultra 260 supercharger failure](https://www.865-customz.com/news/kawasaki-ultra-260-supercharger-failure): Destroyed belt and tensioner and a broken housing mount
- [12F and 15F rebuild](https://www.865-customz.com/news/kawasaki-1215f-rebuild): Another 15F rebuild, and why red RTV is a bad idea
- [12F and 15F rusty fuel sending units](https://www.865-customz.com/news/kawasaki-12f-15f-fuel-sending-units-getting-rusty): Rust in the fuel sending units
- [STX 1100 fuel system rust](https://www.865-customz.com/news/kawasaki-stx-1100-fuel-system): Tank rust that clogged the injectors after sitting
- [750SS stator repair video](https://www.865-customz.com/news/kawasaki-750ss): Stator repair walkthrough
- [750 no spark](https://www.865-customz.com/news/kawasaki-750-no-spark): A Kawasaki 750 with no spark
- [ZXI 900 water damage](https://www.865-customz.com/news/zxi-900-water-damage): An electrical box flooded through failed seals
- [Hydroturf on a Kawasaki 750](https://www.865-customz.com/news/hydroturf-old-school-kawasaki-750): New traction mats on an older 750

## Other repairs

- [Polaris MSX 140 piston damage](https://www.865-customz.com/news/polaris-msx-140-piston-damage): Oil starvation and lower rod bearing failure
- [Melted battery post](https://www.865-customz.com/news/melted-battery-post): A melted battery post
- [Supra SeaDek install](https://www.865-customz.com/news/supra-flooring-renovation-seadek): Carpet replaced with SeaDek on a Supra wake boat
- [YZ450F rebuild](https://www.865-customz.com/news/yz450f-rebuild): Top and bottom end rebuild on an '08 YZ450F
- [BlackTip Jetsports mats on an RXP](https://www.865-customz.com/news/blacktip-jetsports-mats-rxp): Traction mats on a Sea-Doo RXP 4-TEC

## Tools and parts

- [DESS post wrench](https://www.865-customz.com/news/sea-doo-ski-doo-can-am-dess-post-wrench): CNC-machined 6061 aluminum wrench for Sea-Doo, Ski-Doo, and Can-Am DESS retainer nuts
- [DESS post nut tool](https://www.865-customz.com/news/seadoo-dess-post-nut-tool): Tool for removing the DESS post nut
- [DESS post nut tool, raw billet](https://www.865-customz.com/news/sea-doo-d-e-s-s-post-nut-tool-raw-billet): Raw billet version of the DESS post tool
- [951 leak-down block-off plates](https://www.865-customz.com/news/seadoo-951-leak-down-block-off-plates): 0.25" 6061 aluminum plates with EVA foam backing for leak-down testing
- [787 and 800 leak-down block-off plates](https://www.865-customz.com/news/sea-doo-787-800-leak-down-block-off-plates): 6061 aluminum plates with a 1/4" barb on the exhaust plate, in carbed and RFI versions
- [Shock end piece 269501717](https://www.865-customz.com/news/seadoo-269501717-shock-end-piece-billet): Billet replacement for Sea-Doo shock end piece 269501717

## Shop products

Tools and parts made by 865 Customz and sold online. Prices and stock are on each product page.

- [Shop](https://www.865-customz.com/shop/): All products
- [Sea-Doo 951 leak-down / block-off plates](https://www.865-customz.com/shop/product/951-leak-down-plates/): CNC-machined 6061 aluminum, 0.25" thick, EVA foam-backed, for leak-down testing a 951
- [Sea-Doo 951 DI pressure test / block-off plates](https://www.865-customz.com/shop/product/sea-doo-951-di-pressure-test-block-off-plates/): For 951 DI engines in 1999-2003 GSX, GTX, RX, and XP DI models
- [Sea-Doo 787 / 800 leak-down / block-off plates](https://www.865-customz.com/shop/product/sea-doo-787-800-leak-down-plates/): 6061 aluminum plates with EVA foam backing for 787 and 800 RFI engines, with optional laser engraving
- [Sea-Doo 717 / 720 leak-down plates](https://www.865-customz.com/shop/product/sea-doo-717-720-leak-down-block-off-plates/): 6061 aluminum plates with EVA foam backing and Allen bolts for 717 and 720 engines
- [Sea-Doo GTX DI / 787 RFI water channel cover (290811225)](https://www.865-customz.com/shop/product/sea-doo-gtx-di-787-rfi-water-channel-cover-290811225/): Aluminum replacement for the factory plastic cover on the stator housing, which breaks easily
- [Sea-Doo 300 supercharger slip tool](https://www.865-customz.com/shop/product/sea-doo-300-supercharger-slip-tool/): 3D-printed carbon PETG tool for checking supercharger gear slip on the Sea-Doo 300
- [Sea-Doo supercharger gear holding tool, 16 / 17 tooth](https://www.865-customz.com/shop/product/sea-doo-supercharger-gear-holding-tool-16-17-tooth/): Holds 16- and 17-tooth supercharger gears while checking slip
- [Sea-Doo Spark siphon tube (267000782)](https://www.865-customz.com/shop/product/sea-doo-spark-siphon-tube-267000782/): Aluminum replacement for the OEM plastic siphon tube on Spark jet pumps
- [Sea-Doo shock end piece (269501717 / 269501984)](https://www.865-customz.com/shop/product/seadoo-shock-end-piece-269501717-269501984-billet/): Billet aluminum direct replacement for the plastic shock end, made in the USA
- [Sea-Doo start / stop button, 1989-2001](https://www.865-customz.com/shop/product/start-stop-button-sea-doo-89-2001/): Start/stop button for 2-stroke Sea-Doo watercraft
- [DESS post wrench, aluminum](https://www.865-customz.com/shop/product/sea-doo-ski-doo-can-am-dess-post-wrench/): Removes and installs the DESS retainer nut on Sea-Doo, Ski-Doo, and Can-Am, including the newer post
- [DESS post wrench, 3D-printed carbon PETG](https://www.865-customz.com/shop/product/sea-doo-ski-doo-can-am-dess-post-wrench-3d-printed-carbon-petg/): Printed version of the DESS post wrench
- [DESS post nut tool, billet](https://www.865-customz.com/shop/product/seadoo-dess-post-nut-tool-billet/): 6061-T6 aluminum tool with a 14mm rear nut for DESS and RF DESS nuts on Sea-Doo, BRP, and Ski-Doo
- [Yamaha 61X 701 leak-down block-off plates](https://www.865-customz.com/shop/product/yamaha-61x-leak-down-block-off-plates/): For 61X engines with the 8mm exhaust bolt pattern and single intake
- [Kawasaki 750 leak test / block-off plates](https://www.865-customz.com/shop/product/kawasaki-750-leak-test-block-off-plates/): Intake and exhaust plates for 750 engines with the older exhaust manifold, hardware included
- [Kawasaki 900 / 1100 pressure test / block-off plates](https://www.865-customz.com/shop/product/kawasaki-900-1100-pressure-test-block-off-plates/): 6061 aluminum plates with EVA foam backing and Allen bolts
- [Pop-off pressure pump](https://www.865-customz.com/shop/product/pop-off-pressure-pump/): Checks carburetor pop-off pressure and runs leak tests with leak-down plates
- [PWC battery install and removal tool](https://www.865-customz.com/shop/product/battery-install-removal-tool/): 3D-printed handle for lifting 16-30 lb watercraft batteries out of tight compartments

## Optional

- [Diagnostic hardware and software](https://www.865-customz.com/news/new-diagnostics-hardware-software-year): Computer diagnostics for Sea-Doo, Yamaha, Kawasaki, and Can-Am, 2015 and older
- [In-house cylinder boring](https://www.865-customz.com/news/we-now-offer-in-house-boring-on-all-cylinders): Cylinder boring and sleeving done in the shop
- [Klotz and Bel-Ray oils](https://www.865-customz.com/news/we-now-offer-klotz-and-bel-ray-oils): Oil brands carried by the shop
- [Motorcycle and ATV service](https://www.865-customz.com/news/motorcycle-and-quad-service): Off-road ATV and motorcycle service announcement
- [YouTube channel](https://www.865-customz.com/news/subscribe-to-our-youtube-channel): Repair and rebuild videos on YouTube
- [Parting out a GP1200R](https://www.865-customz.com/news/parting-out-gp1200r-01): Used Yamaha GP1200R parts
- [Parting out a Wave Venture 1100](https://www.865-customz.com/news/parting-out-yamaha-wave-venture-1100): Used Yamaha Wave Venture 1100 parts
- [Past promotion: spring service](https://www.865-customz.com/news/spring-service-on-all-watercraft): Old spring service pricing, not current
- [Past promotion: spring special](https://www.865-customz.com/news/spring-special-on-all-watercraft): Old spring special pricing, not current
- [Past promotion: winterization](https://www.865-customz.com/news/watercraft-winterizations-60): Old winterization pricing, not current