The compression ratio for a 1999 Yamaha Kodiak 400 is typically around 9.2:1. The idle air screw setting can vary based on altitude and specific tuning but is generally recommended to be set at 2 to 2.5 turns out from a lightly seated position for optimal performance. Always refer to the owner's manual or a service manual for the most accurate settings for your specific conditions.
The pilot screw setting should be screwed in until it is snug (not tight), then backed out 1 and 3/4 turns.
turn clockwise till stopped, then 1 1/4 turn out is the basic setting
The only setting is one screw on the top of each carb its the mixture screw and should is 1.5 turns out by default.
On the 1999 Yamaha YZ 400, the fork compression adjustment is located at the top of each fork leg. You can find a small screw or dial that allows you to adjust the compression damping. Turning the screw clockwise typically increases compression damping, while turning it counterclockwise decreases it. Always refer to the owner's manual for specific settings and adjustments.
screw it all the way in and then back it out 1 1/2 full turns and begin adjusting from there.
how to adjust air fuel mixture on yamaha sh50? Is the screw an air screw (in to richen) or a fuel screw? (out to richen)
30 years of working on motorcycles, there is no exact setting what you do is turn the mix in until you hear the motor change, if it picks up rpm this is fine just keep turn until the rpms reaches its top then turn the idle screw down,
take the side pannel off and there is a knob on the end of a rubber tube that does this for you. turn right or left to get the Idle that you want.IF it is missing or has fallen off it will be on the left side and towards the front to bottom of the Carb.Good luck.
With a screw driver
On the side of the carb.
The optimal setting for a pilot screw on almost any bike is one and one half full turns out from the closed position.
M5x80