Low-Speed Tuning - Yamaha SRX700D Service Manual

Hide thumbs Also See for SRX700D:

Table of Contents

CARBURETOR TUNING

Low-speed tuning

The carburetors are built so that low speed tuning

can be done by adjusting the pilot mixture screw

1 and throttle stop screw 2.

Never run the engine without the air intake si-

lencer installed. Severe engine damage may re-

1. Tighten the pilot mixture screw until it is

lightly seated and then back it out the speci-

fied number of turns.

Pilot mixture screw 1:

1-1/8 turns out

Pilot mixture screw effects:

2. Set the engine idle speed by turning the throt-

tle stop screw in (to increase engine speed) or

out (to decrease engine speed).

Standard idle speed:

3. If low-speed performance is still poor at higher

elevations under extreme conditions, the

standard pilot jets may need to be replaced. In

this way, the proper air/fuel mixture is ob-

In this case, use a larger numbered pilot jet to

enrich the air/fuel mixture.

Standard pilot jet:

1,800 ± 100 r/min