Lower unit gearlube change

trailertrawlerkismet

Well-known member
Joined
Feb 23, 2011
Messages
2,518
Fluid Motion Model
C-24 C
Vessel Name
(2022) Kismet
It’s time for me to change the gear case oil in our Yamaha 250. The manual shows a drawing of both the upper and lower screws. The lower, drain screw is behind the black plastic filter but the upper is nowhere to be seen, as shown in the service manual. Have others changed there lower unit lube to know where the upper drain screw has been moved to?

Jim F
 
Thanks for that Dave. Great video however the upper drain screw shown on his 300 does not show on our 250. Anyone else with the newer 250 on locating the upper drain screw?

Jim F
 
Apparently Yamaha has moved the vent screw on the lower unit of the 250 to behind the lower units upper and centered water vent. Important to know as this screw needs to be taken off when draining and filling the lower units gear lube.

Jim F
 
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