Service Manual

15
MAINTENANCE
Cleaning the Exhaust System (Lawn
Mower)
Warnin
g
: Disconnect the spark plu
g
wire to prevent
accidentally startin
g
the en
g
ine.
1. (Mower) Usin
g
a 1/2" drive with a 15/16" socket,
remove the blade nut that secures both the mulch
fan and blade to the en
g
ine. Use heavy-duty
g
loves to hold the blade while removin
g
the nut.
(See Fi
g
ure 6.) Note: Removin
g
the blade is
merely for convenience while workin
g
.
Fi
g
ure 6
0893-011
(Snowthrower) Remove 2 bolts holdin
g
the muffler to
the en
g
ine block. Remove the muffler. Proceed to
step 3.
2. Remove the cover and the exhaust pipe under the
cover. (See Fi
g
ure 7.)
Fi
g
ure 7
1657-010
Fi
g
ure 8
1657-001
3. With the cover and exhaust pipe removed, you can
see into the passa
g
e leadin
g
to the exhaust port of
the en
g
ine (A) and passa
g
e to the muffler (B). If
the exhaust requires cleanin
g
, remove the en
g
ine
and separate the en
g
ine and base for access to
the exhaust ports. If the muffler requires cleanin
g
,
it can be removed by removin
g
the 2 screws on
either side of the muffler passa
g
e (see Fi
g
ure 8)
and one throu
g
h the side of the muffler (see A in
Fi
g
ure 9). Use a stick of wood to scrape the
carbon loose. Do not use a metal scraper.
Fi
g
ure 9
16057-009
4. The muffler (B) can be removed from the top of the
mower to inspect for carbon buildup. (See Fi
g
ure
9.)
A
B
A
B