Test with your vehicle
- Warm the engine up with the carburettor in the standard settings,
and examine the spark plug condition.
- Test the quad keeping the carburettor valve open.
Symptoms of inadequate changes
If your quad has one of the symptoms below you must adjust the
carburettor. Before performing any changes make sure the rest of
the engine works correctly.
Check the state of the spark plug, make sure the tuning is correct,
clean the air filter, brush out the cinders in the exhaust.
- Adjust the carburation so that the engine responds correctly with
the carburettor valve open.
- If the mixture is too poor, the engine tends to overheat and may
seize. On the other hand, if the mixture is too rich, the plug gets
damp and provokes misfiring. The adequate mixture varies according
to the weather conditions, you must take them into account and
adjust the carburettor settings afterwards.
NOTE
Make sure the carburettor parts that regulate the flow of fuel
and the screw that controls the air flow are well adjusted.
Correct
Poor
Rich
Dry and clear insulation
White insulation
Damp and black insulation
Change carburation one step
higher
Change carburation one step
lower.
Spark plug condition
WILD HP -
102
-
Standard measurements
Correcting factors
(For height or temperature changes).
1.
Find the correcting factor to adjust the carburettor.
Example: 1,000 m high and 35ºC, correction 0.94.
2.
Using the correcting factor, select the idle jet and the correct
carburation.
Example: factor 0.94, you must multiply the measured carburation
by this number.
Idle jet # 50 x 0.94 = # 47.
Main jet # 162 x 0.94 = 158.
3.
Find your correcting factor for the needle and the air screw in the
chart and change the clip position and the air screw opening.
- Adjusting the needle clip: move from the present position 3 to
position 2
- Opening the air screw: 1 ½ + 1 turn = 2 ½ turns out.
PETROL
Accelerator valve
Idle jet
Needle
Main jet
UNLEADED
7
38
N1EC
185