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DannoXYZ · December 26th, 2020, 09:34 PM

Hi Tommy! Welcome to Ninjette !!!

Yes, flat where it meets cylinder-head. Grooved on cover side.

Don't use silicone, it doesn't stick very well when there's oil around. Also on newer bikes with EFI, it tends to sneak through to exhaust and foul up O2-sensors. Use FIPG material such as Toyota 00295-00103, Yamabond-4 (not 5), Permatex The Right Stuff Grey.

Apply where manual instructs. If you want, apply just tiny bit on flat side, a fishing-line sized bead. Top side not needed due to groove and labyrinth sealing. Also don't over-tighten valve-cover bolts. They bottom and stops pressing on gasket after certain point. More torque will just snap valve-cover bolts.

December 26th, 2020, 09:34 PM	#3
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	Hi Tommy! Welcome to Ninjette !!! Yes, flat where it meets cylinder-head. Grooved on cover side. Don't use silicone, it doesn't stick very well when there's oil around. Also on newer bikes with EFI, it tends to sneak through to exhaust and foul up O2-sensors. Use FIPG material such as Toyota 00295-00103, Yamabond-4 (not 5), Permatex The Right Stuff Grey. Apply where manual instructs. If you want, apply just tiny bit on flat side, a fishing-line sized bead. Top side not needed due to groove and labyrinth sealing. Also don't over-tighten valve-cover bolts. They bottom and stops pressing on gasket after certain point. More torque will just snap valve-cover bolts. Last futzed with by DannoXYZ; December 26th, 2020 at 11:23 PM.