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Repair
Engine and Upper Machine Components
wc_tx001546gb.fm
57
4.16
Muffler (pre-2009 BS Models)
See Graphic: wc_gr001314rm
Recommended Tools
Ratchet wrench
Torque wrench
Hex key: 5 mm
Hex key or hex socket: 6 mm
Socket: 19 mm (3/4”)
Loctite 243 (blue)
Carbon deposits can form in the muffler
(d)
and in the cylinder exhaust
port. If allowed to accumulate, they will gradually restrict the exhaust
passages, resulting in poor engine performance and hard starting.
Factors contributing to this problem include:
•
Too much oil in the fuel mixture
•
Dirty air filter causing the engine to run rich
•
Excessive engine idling
•
Dirty carburetor
4.16.1 Remove the two hex head cap screws
(a)
holding the muffler guard
(b)
to the muffler
(d)
. When reinstalling the muffler guard, apply Loctite
243 and torque the screws to 35 Nm (25 ft.lbs.).
4.16.2 Remove the two socket head cap screws
(f)
holding the muffler and
the muffler guard to the engine cylinder. When reinstalling the muffler
and the muffler guard, apply Loctite 243 and torque the screws to 23
Nm (17 ft.lbs.).
4.16.3 Remove the two socket head cap screws
(c)
located inside the muffler.
4.16.4 Remove the muffler.
4.16.5 Slowly pull the starter rope until the piston is at the top of its stroke and
is covering the exhaust port. This prevents dirt from entering the
engine cylinder.
4.16.6 Remove any carbon deposits on the engine exhaust port with a blunt
scraper.
4.16.7 Replace the silencer gasket
(e)
.
4.16.8 Soak the muffler in carburetor cleaner or a similar cleaning solution for
several hours.
4.16.9 Drain the muffler and blow it dry.
Summary of Contents for BS 50
Page 8: ...8 wc_br0114549en_11TOC fm Table of Contents Rammmer Repair 10 16 DS 70 148 10 17 DS 720 150...
Page 26: ...Maintenance Schedules Rammer Repair 26 wc_tx001545gb fm Notes...
Page 48: ...Engine and Upper Machine Components Repair 48 wc_tx001546gb fm a wc_gr003705 a a b b c c b...
Page 54: ...Engine and Upper Machine Components Repair 54 wc_tx001546gb fm wc_gr001313rm a b d e c f...
Page 56: ...Engine and Upper Machine Components Repair 56 wc_tx001546gb fm e b c d wc_gr004562 a g f...
Page 61: ...Repair Engine and Upper Machine Components wc_tx001546gb fm 61 w c _ g r 0 0 1 3 1 5 r m...
Page 70: ...Engine and Upper Machine Components Repair 70 wc_tx001546gb fm wc_gr002935 d a b e c d...
Page 82: ...Engine and Upper Machine Components Repair 82 wc_tx001546gb fm w c _ g r 0 0 1 3 1 7 r m...
Page 84: ...Engine and Upper Machine Components Repair 84 wc_tx001546gb fm BS Models...
Page 94: ...Ramming System Rammer Repair 94 wc_tx001547gb fm Notes...
Page 98: ...Ramming System Rammer Repair 98 wc_tx001547gb fm wc_gr001325rm Threaded Rod Method...
Page 114: ...Crankcase Rammer Repair 114 wc_tx001548gb fm Notes...
Page 121: ...Rammer Repair Oil Injection if equipped wc_tx001549gb fm 121 wc_gr001526 a b c d...
Page 123: ...Rammer Repair Oil Injection if equipped wc_tx001549gb fm 123 wc_gr001527 a b...
Page 147: ...Rammer Repair Technical Data wc_td000112gb fm 147 Notes...