Checking The Spark Plug; Carburetor Adjustment; Operating Speed; Blade Clutch Lever Free Play - Honda HRX426C Manuel Du Propriétaire

CHECKING THE SPARK PLUG

Recommended plugs: NGK - BPR5ES
CAUTION:
• Use only recommended spark plugs. Using spark plugs with
inappropriate temperature ranges may damage the engine.
If the engine has just been run, do not touch the muffler and the
spark plug which will still be very hot.
1. Pull off spark plug cap [1] and remove spark plug [2] using a
plug spanner [3].
2. Carefully inspect the spark plug. Replace the plug if there are a
lot of deposits or if the insulator is cracked or broken.
3. Measure the plug gap using a set of feeler gauges ; the gap
must be between 0.7 and 0.8 mm. If adjustment is necessary,
carefully bend the side electrode.
4. Check that the sealing washer is in good condition ; then screw
the plug down by hand until finger tight and correctly seated.
5. Using a plug spanner, give an additional 1/2 turn for a new spark
plug, to compress the washer. If you refit the same plug, just
1/8 to 1/4 turn will do from the finger tight position.
6. Refit the spark plug cap.
CAUTION:
• The spark plug must be correctly tightened. A plug incorrectly
screwed down can become very hot and damage the engine.
MAINTENANCE OF SPARK
ARRESTER
(Optional part)
(In Europe and other countries where the machinery directive
2006/42/EC is enforced, this cleaning should be done by your
servicing dealer).
If the mower has just been run, the silencer will still be very hot.
Allow it to cool down before carrying out this operation.
In some regions, it is prohibited to operate an engine without a
spark arrester.
1. Remove the three flange
bolts [4] from the muffler
protector [5] and remove the
muffler protector.
2. Remove the two tapping
screws [6] from the spark
arrester [7] and remove the
spark arrester from the
muffler.
3. Check the carbon deposits around the exhaust port and spark
arrester. Clean if necessary.
4. Replace the spark arrester if there are any breaks or tears.
5. Install the spark arrester [7] and muffler protector [5] in the
reverse order of removal.

CARBURETOR ADJUSTMENT

CAUTION:
• It is recommended to ask your Honda dealer for adjustment.
Specified idle speed:

Operating speed:

BLADE CLUTCH LEVER FREE PLAY

Measure the clearance [8] at the top of the lever [10] by holding
the yellow button [9] pressed in.
It must be between 5 and 10 mm.
[8]
C18
SAFETY
If necessary:
1. Undo the lock nuts [11] with a 10 mm spanner.
2. Move the nuts [11] up or down as necessary.
3. Retighten the lock nuts [11] and recheck the clearance.
[11]
[11]
4. Start the engine outdoors and engage the blade clutch lever.
Check that the blade starts to rotate when you pull the lever to
the rear, and that it stops rapidly when the lever is released.
If the blade does not start to rotate or stop as it should, even
when the cable is correctly adjusted, the system may need to be
repaired. Take the mower to an approved Honda dealer.
1 700 ± 150 rpm
HRX426C : 2 900
HRX476C : 2 750
[9]
[9]
[10]
[10]
[11]
[11]
C1 C12
SAFETY
+ 0
rpm
- 100
+ 0
rpm
- 100
C16
SAFETY
[8]
9 EN