92-01 Yamaha YFB250 YFB 250 Timberwolf Carburetor Multi Stage Jet Kit #1 to #5

Description

This Jet Kit Fits The 92-01 Yamaha YFB250 Timber Wolf ATV
Multi Stage #1 #2 #3 #4 #5
Let me know if you need to substitute different size jets.
You get What's In first Photo.
This kits includes three VM28/486 type Pilot Jets  #20 #22.5  &  #25  and five large round type Main Jets  #87.5 #90 #92.5  #95  #97.5  two needle slide shims.
Multi Stage is for those experimenting with different engine, air intake and exhaust systems
Modifications to the air intake and/or Exhaust system to your ATV will change the air/fuel mixture to your carburetors causing a lean running condition.
Jet Kits will compensate for the lean running condition.
Lean running conditions can destroy your engine and decreases overall performance.
Jet kits are easy to install but you will need to have some basic carburetor tuning knowledge.
refer to your shop manual for carburetor removal and installation.
This is only jetting suggestions for your application.
These are recommendations only, based upon testing at sea-level atmospheric pressure,
a 65-80F degree ambient air temperature,
on super unleaded pump fuel with a stock motor.
There are too many variables outside of our control to give you an exact configuration that works perfectly under all conditions.
Our recommendations are just that, a starting point to reference from.
Higher elevations, high humidity, hotter temperatures are examples that will require leaner jetting.
Colder temperatures are an example that will require richer jetting.
If you are  not knowledgeable or don’t feel comfortable tuning your machine yourself, find a mechanic in your area who is.
We are not responsible for problems derived from improper jetting and/or usage.
Always check that your jetting is correct when changing parts that could affect the intake system, exhaust system and any product or change
that could alter fuel combustion in the cylinder.
International Buyers – Please Note:
Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.