Gas tank for lazy boy 3.5 tiller

If the gearbox has oil/fluid and the level is correct, I would dismantle the shifter, clean and lubricate it with dry lube. Using oil based sprays, WD etc, will cause a dust/grime build up and make it jam up again.

open gear box and inspect /adjust linkage

the seals will have a part number engraved in the face of the seals
take a seal to a bearing / seal retailer and they will have the seal that is the same as that unit
If you cannot find the number , they will measure and match the seal

Look for wear in any of the bushings or bearings that support the shafts that have sprockets on them, also look for wear in the chain and sprockets. If the chain as wear it may need to be replaced and possibly the sprockets also.

Use https://www.google.com to search for vendors, and contact them to verify correct part.

Example from Google search:

https://www.smallengineequipmentparts.com/brand/lazy-boy

Small Engine Equipment Parts LAZY BOY Parts Catalog

Small Engine Equipment Parts LAZY BOY Parts Catalog Might try here.

Adjust the depth bar on the back higher and push the handles down to rasie the tines somewhat.

www.hyperparts.com/ope/LazyBoy-oem-list.htm

you've found the right place buddy
I keep buying manuals from various websites so
I can damn well help u in this..
what chipper is it btw? Like few websites have some manuals better while some have other brands better

ITs not really a lazy boy brand is it? If we a re talking about garden tillers... then if the fill hole is on top the oil level should be about 1 ( one) inch below the hole. If the hole is on the side of the gear case then it is a peep hole and should be filled till fluid runs out.