Periodic Checks And Adjustments; Chk Adj; Top Cowling; Checking The Top Cowling - Yamaha E40G Service Manual

CHK
ADJ

Top cowling

Checking the top cowling

1. Check the fitting by pushing the cowling
with both hands.

Fuel system

Checking the fuel joint and fuel
hoses (fuel joint-to-carburetor)
1. Check the fuel hose connections and fuel
joint 1 for leaks. Replace if necessary.
Also, check the fuel filter 2, fuel pump
3, and carburetor 4 for leaks or deterio-
ration. Replace if necessary.
4
1

Checking the fuel filter

1. Check the fuel filter element 1 for dirt
and residue and check the fuel filter cup
2 for foreign substances and cracks.
Clean the cup with straight gasoline and
replace the element if necessary.
1
2
3-3

Periodic checks and adjustments

6F630010
2
3
6F630020
6B430020
NOTE:
Be sure not to spill any fuel when removing
the fuel filter cup.

Power unit

Checking the spark plugs

1. Disconnect the spark plug caps, and then
remove the spark plugs.
2. Clean the electrodes 1 with a spark plug
cleaner or wire brush. Replace the spark
plug if necessary.
3. Check the electrodes for erosion and
excessive carbon or other deposits, and
the gasket for damage. Replace the
spark plug if necessary.
4. Check the spark plug gap a. Adjust if out
of specification.
Specified spark plug:
B7HS (NGK), BR7HS (NGK)
Spark plug gap a:
0.6—0.7 mm (0.024—0.028 in)
5. Install the spark plug, tighten it finger
tight, then to the specified torque with a
spark plug wrench.
Spark plug:
25 N·m (2.5 kgf·m, 18 ft·lb)
1
6B430025
a
6B430030
6F65G11