Yamaha ATVs - Recent Questions, Troubleshooting & Support

ummm melted wiring??? ya think maybe??

Yamaha 2004... | Answered on Dec 04, 2017

According to your VIN Its 1997

The complete info from dmv is
Destination Market: U.S.
Model: YFM400FW Kodiak 4x4
Model Year: 1997
Plant City: Hamamatsu
Vehicle Type: MOTORCYCLE
Plant Country: Japan
Body Class: Motorcycle - All Terrain Cycle (ATV)
Drive Type: 4WD/4-Wheel Drive/4x4
Displacement (CC): 400
Displacement (CI): 24.409497637
Displacement (L): 0.400000

Yamaha 2004... | Answered on Nov 26, 2017

Hi the cable needs slack if you take all the adjust out meaning the is no free play in the cable your taking the pressure off of the clutch plates causing it to not be engauged.

Yamaha 2005... | Answered on Nov 06, 2017

Use heavy duty SAE 80W-90 gear oil

Engine oil does work but the oil will not last as long nor will it protect the bearing's/gear's as well as gear oil. Thick dif oil can work to.
Also the gear box is should be sealed.

Yamaha 2004... | Answered on Oct 23, 2017

Sounds to me like you have a bad ground wire somewhere

Yamaha 2004... | Answered on Oct 20, 2017

Check to see if one of the shifter rods behind the side pannel are bent.this usually happens due to lack of lube end people try to force it into gear.

Yamaha 2004... | Answered on Oct 04, 2017

check youtube for generic valve adjusting procedures, the kodiak is like most of them.

Yamaha 2004... | Answered on Oct 04, 2017

Take your battery to O'Reilly's or AutoZone and have the CCA (Cold Cranking Amps) checked..(load test).. this WILL tell you if your battery is good or not.
Just because you have 12 VOLTS doesn't mean it's A GOOD BATTERY..You MUST have amperage to start/run your ATV

Yamaha 2010... | Answered on Oct 01, 2017

Check spark plug, that sounds like it's running little too lean.

Yamaha 2004... | Answered on Sep 21, 2017

Check brakes to ensure all are fully open.

Yamaha 2005... | Answered on Sep 21, 2017

The cdi is not comparable.

Yamaha 2007... | Answered on Sep 21, 2017

Low coolant level, thermostat, pinch or punctured hose, fan not coming on, (low oil level).

Yamaha 2009... | Answered on Sep 21, 2017


..Sounds like the valves are hitting the piston!!

Did you/your mechanic check the valve to piston clearance at max valve lift/PISTON HEIGHT??..you need at least .035" (.89mm) on the intake and .060" (1.5mm) on the exhaust.- MINIMUM - . THIS IS CRITICAL!!!

11:1 is a pretty tall compression ratio. Are you racing this atv?.. one thing you will find out is that you NEED TO RUN HI-OCTANE fuel..NOT airplane fuel either (its got antifreeze and other additives you so not want to deal with)..11:1 might require a 110 OCTANE race gas to get it to run right... make SURE the timing is RIGHT!!..with this much compression the right fuel, timing, valve clearance, cam timing, etc, MUST be perfect!!!

Yamaha 2005... | Answered on Sep 15, 2017

1. Check the INTAKE valve clearance!!!!
2. Check for an air leak
3. Install a new spark plug and air filter!!
4. Check the compression..
5. Have the carb professionally cleaned and set!!
>> Once you have sone all these steps.. repost to me if this did not fix it!!

Yamaha 2004... | Answered on Sep 09, 2017

are you getting anything at all?.....you could check your ground wire(s) to make sure they have good contact on the bare frame metal

Yamaha 2005 Big... | Answered on Sep 09, 2017

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