Pilot screw cap - Yamaha Raptor Forum
 
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post #1 of 3 (permalink) Old 01-18-2019, 12:41 PM Thread Starter
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Pilot screw cap

A. Why do they put a cap over the pilot jet screw?

B. Other than drilling it out, is there a trick to getting it out with the carb installed on the bike?

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post #2 of 3 (permalink) Old 01-19-2019, 07:02 AM
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A. In these days of emissions the carbs are adjusted lean, then caped to prevent tampering.

B. Sometimes you can drill and run a screw in and pull the cap out. Use a claw hammer or wonder bar for leverage. On come carbs, there is sacrificial metal around the cap that can be broken to access cap removable.

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post #3 of 3 (permalink) Old 01-19-2019, 08:49 AM Thread Starter
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I've taken a lot of carbs apart, and I like this unit. Pretty user friendly. One of the float bowl screws was torqued by godzilla though, which required dremeling the screw into a flat head and using the impact screwdriver. I found the float to be over a 1/4" low, which is why the bike was hard starting and took a long time to heat up enough to go. All of the screw caps I have removed before were aluminum. This cap appears to be brass and has a hole in the center of it.

Getting the carb out of the 125 was a chore though. The design of the intake hose to the air cleaner housing required much man-handling and beers. I installed a K&N, not so much for performance, but rather to get away from the dreaded chore of cleaning and oiling the foam filter.

15 Raptor 700R
02 Raptor 660
05 Raptor 350
11 Raptor 125
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