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Jonsered 49 SP User Manual

Jonsered 49 SP
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Ignition system
Breaker point gap adjustment
Remove the starter assembly, the magneto flywheel, and
the cover over the breaker point assembly. Fit the flywheel
nut and turn the crankshaft until the breaker points are
at their widest distance apart. The gap should then be
0.016 inch (0.4 mm). If not, adjust the position of the
fixed point.
Ignition timing
The ignition timing is set at the factory to 0.080 inch
(2 mm) before TDe. Turn the magneto mounting plate
against the crankshaft's normal direction of rotation to
advance the ignition timing. To retard the timing, turn
the plate in the same direction as that or the crankshaft.
The distance between the flywheel and the ignition coil
core should be 0.012 to inch (0.30 mm).
I. Breaker points.
2. Ignition coil.
3. Breaker point screw.
4. Magneto mounting plate screws.
5. Capacitor.
Recoil/starter
To replace the starter spring or the nylon rope, remove
the center screw and lift out the rope drum and return
spring assembly.
Install the starter rope as shown in the figure.
Fit the spring to the underside of the drum and place the
parts in the fan housing. Tension the spring after assem-
bling by inserting the rope in the drum recess and turning
the drum clockwise.
Replacing the fan housing: Pull out the rope about 1Y2
feet (50 cm). Place the fan housing over the flywheel and
let the rope rewind itself. The starter pawls will then
engage correctly.
Lubricate the return spring through the hole in the fan
housing. Use light oil of the ATF type.
light oil

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Jonsered 49 SP Specifications

General IconGeneral
BrandJonsered
Model49 SP
CategoryChainsaw
LanguageEnglish

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