Echo HC-1501 Operator's Manual page 23

1. Locknut
2. Bolt
Lubricating gear housing
1. Grease fitting
3. Loosen 1/4 - 1/2 turn
4. Washer
Maintenance and care
Adjusting gap between blades (As needed)
Loosen the locknuts 1/2 turn with T-wrench.
Tighten the blade bolts until snug with 10 mm open end wrench.
Loosen the bolts 1/4 - 1/2 turn.
Hold the bolts from turning and tighten the locknuts.
When bolt adjustment is correct, there should be a gap of 0.25 -
0.50 mm between the cutter blades and the flat washers, and the
flat washer beneath each bolt head should turn freely.
Tools required:
Grease gun, Rag.
Parts required:
Lithium based grease.
1. Clean dirt from grease fitting.
2. Hold the product firmly and carefully pump grease in fitting.
Do not force grease. Too much pressure will force grease
past seals and cause damage. Apply 1 - 2 pumps of
grease every 15 - 20 hours of operation.
NOTE
Use good quality lithium multi grease.
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