By Trail Tricks
The bolt above the sight-glass window of RFS four-strokes has oil surrounding it inside the case. Many times it will leak a mist of oil that obscures the window. Using a non-hardening sealant like Yamabond or ThreeBond at the upper end of the threads will help. Don’t use silicone for this job.Got a Trail Tip? Send it and some pictures to firstname.lastname@example.org, subject: Trail Tips.