Maintenance Repair Tips

Clamping element will not tighten shaft anymore

If your 'clamping' element will not tighten shaft anymore (e.g. due to a slightly reduced shaft diameter), you may:

• press together the outer clamping element in a bench vise
• OR use a filling under the 'ring'. Soda/beer can strip works fine for that. Wedged parts has slits, make sure those are not towards each other nor towards shaft d-slot.
• OR add a heat shrink tubing over the inner clamping element as shown in the photo (NOTE: this is a temporary solution and may not last forever as the heat shrink tubing may dissolve over time):

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Motor bearing is stiff or making noise

Replace motor bearing by a new one:

mower motor ball bearing type: 608-ZZ (22mm diameter, 7mm width, 8mm hole)