Cobra 6057 Manuale utente
®
23801 E. La Palma Ave., Yorba Linda, Ca 92887 Ph. 714.692.8180 Fax. 714.692.5016
www.cobrausa-hd.com
11/17 ®
DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION
CONTROLLED MOTOR VEHICLES.
Instruction Manual >
6057
Page 1 of 2
***NOTE: MUFFLER INLET GASKETS CANNOT BE REUSED. NEW GASKETS (HD PN# 65900017)
MUST BE PURCHASED BEFORE INSTALLATION.***
Read all instructions carefully and completely before installing your new slip-on mufflers.
1. Remove the front (lower) muffler first. Loosen the muffler clamp and remove the two bolts on the muffler mount.
Then slide the muffler backward off of the headpipe. Save the muffler clamp as it will be reused.
2. Remove the rear (top) muffler the same way. NOTE: If you cannot get the proper wrench to remove the rear
(top) bolts from the muffler mount bracket then remove the muffler and muffler mount bracket together as a unit
by removing the lower two bolts on the muffler mount bracket. See Figure 1. Once the muffler and bracket have
been removed from the motorcycle then detach the muffler from the bracket. Save the muffler clamp as it will be
reused.
3. If the muffler mount was removed then install the muffler mount back onto the motorcycle. Snug the bolts but do
not tighten at this time.
4. Position the stock clamps with hex head as shown in Figure 2 and slide them onto the slip-on mufflers.
5. Install new muffler inlet gaskets into the muffler inlets. See Figure 2. NOTE: MUFFLER INLET GASKETS
CANNOT BE REUSED. NEW GASKETS (HD PN# 65900017) MUST BE PURCHASED BEFORE
INSTALLATION.
Items Supplied >
1 –FRONT MUFFLER ASSEMBLY
1 –REAR MUFFLER ASSEMBLY
4- 1/4” X 3/4” HEX FLANGED BOLTS
NOTE: MUFFLER INLET GASKETS CANNOT BE
REUSED. NEW GASKETS (HD PN# 65900017)
MUST BE PURCHASED BEFORE INSTALLATION.
Application >
HARLEY:
SOFTAIL STREET BOB 2018
SOFTAIL LOW RIDER 2018
SOFTAIL SLIM 2018
SOFTAIL BREAKOUT 2018
SOFTAIL FATBOY 2018
Continued on Page 2
FIGURE 1
REMOVE MUFFLER
BRACKET BOLTS TO
REMOVE MUFFLER
AND BRACKET
TOGETHER.
FIGURE 2
ORIENT STOCK
CLAMPS WITH HEX
HEAD AS SHOWN
MUFFLER WITH LOGO IS
REAR (TOP) MUFFLER
MUFFLER INLET GASKETS
CANNOT BE REUSED. NEW
GASKETS (HD PN# 65900017)
MUST BE PURCHASED BEFORE
INSTALLATION.
®
23801 E. La Palma Ave., Yorba Linda, Ca 92887 Ph. 714.692.8180 Fax. 714.692.5016
www.cobrausa-hd.com
11/17 ®
Instruction Manual >
6057
Page 2 of 2
6. Slide the rear (top) muffler onto the head pipe first, then the front (bottom) muffler second, until the mounting
holes align. See Figure 3. NOTE: THE MUFFLER WITH THE COBRA LOGO IS THE REAR (TOP) MUFFLER.
7. Fasten the mufflers using the supplied 1/4” x 3/4” hex flanged bolts in the same manner as stock but do not
tighten. See Figure 3. Verify that the gap, where the mufflers meet the stock heat shields, is similar to the gap
the stock mufflers allotted.
8. Adjust the muffler mount bracket up or down so the mufflers are straight on the bike and then tighten the two
bolts on the muffler mount bracket. Tighten to factory specifications.
9. Check all clearances and alignments then tighten the clamps. (NOTE: The muffler clamps should be flush with
the end of the muffler when tightened. See Figure 4. If the muffler clamps are slid backward past the slots on
the muffler slip the clamps will not tighten the mufflers properly).
10. Tighten the mounting bolts to factory specifications.
11. IMPORTANT: Before starting your engine remove all fingerprints from chrome with a quality wax or chrome polish.
Failure to do so can cause chrome discoloration. Due to fluctuations in fuel delivery settings, timing, etc., Cobra
Engineering does not warrant against chrome discoloration.
12. Check the tightness of the button head bolts securing the core/tip to each muffler after the first ride, 100
miles, and every 500 miles after that.
DOCUMENT NO. 0018 REV. A
REPLACEMENT E-GLASS PACKING AND OPTIONAL 1¾” QUIET CORES MAY BE
PURCHASED THROUGH YOUR DEALER OR ONLINE AT WWW.COBRAUSA-HD.COM
DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION
CONTROLLED MOTOR VEHICLES.
FIGURE 4
CLAMP SHOULD BE
FLUSH WITH EDGE
OF MUFFLER
DO NOT SLIDE CLAMPS
BACKWARD PAST SLOTS
CLAMP
SPACER
NOTE: SOFTAIL SLIM SHOWN. MUFFLER
POSITION VARIES DEPENDING ON MODEL.
FIGURE 3
SUPPLIED 1/4” X 3/4”
HEX FLANGED BOLTS
STOCK MUFFLER
CLAMPS
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