Maruyama LB30 Owner's/Operator's Manual page 27

Lubrication
Remove the two screws to allow grease to be injected (see illustration), and inject grease
1
into both screw holes. Inject about 20cc per every 10 hours of operation as a reference.
2 Insert the two screws and tighten securely.
Remove hex screw (M5 6) in the gear case, and inject about 10cc of grease into the hole
3
every 25 hours of operation as a reference.
Insert the hex screw(M5 6) and tighten it securely.
4
This completes lubrication
Injection hole
Grease injection hole
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