Echo QV-680 Instruction Manual - Maintenance

22

QV-680

MAINTENANCE

0.6 to 0.7 mm

(0.024 to 0.028 in.)

Check spark plug

(As Needed)

1. Check plug gap.

2. Inspect electrode for wear.

3. Inspect insulator for oil or other deposits.

4. Replace plug if needed and torque to 15 - 17

N

•

m (130 to 145 in. lb.).

   DANGER

Fuel vapors are extremely flammable and

may cause fire and/or explosion. Never test

for ignition spark by grounding spark plug

near cylinder plug hole, otherwise serious

personal injury may result.

NOTE

Proper gap is 0.6 to 0.7 mm (0.024 to 0.028 in.)

Inspect muffler assembly

(As Needed)

• Remove air cleaner cover and remove spark plug

lead.

• Remove spark arrestor screen cover and screen

from muffler body.

• Clean carbon deposits from muffler components.

• Replace screen if it is cracked, or has holes

burned through.

• Assemble components in reverse order.

NOTE

• Carbon deposits in muffler will cause drop in

engine output. Spark arrestor screen must be

checked periodically.

Clean cylinder fins

(As Needed)

1. Check periodically.

2. Clogged fins will result in poor engine cooling.

3. Remove dirt and dust from between fins to let

cooling air pass easily.

NOTE

Clogged fins will cause poor engine cooling.

Spark arrestor screen

Muffler

Screen cover