KTM 50 MINI ADVENTURE Owner'S Manual Download Page 24

ENGLISH

23

MAINTENANCE WORK ON CHASSIS AND ENGINE 

»

Checking/refilling the front brake fluid level 

(50 Mini SX) *

The brake fluid reservoir is combined with the hand brake cylinder on the han-

dlebar. To check the brake fluid level, press the brake pistons back into the

basic position. Move the hand brake cylinder in a horizontal position, remove

the screws 

[1]

and the cover 

[2]

with the diaphragm 

[3]

. The brake fluid level

should be 5 mm below the upper edge of the reservoir (see drawing), other-

wise add DOT 5.1 brake fluid (e.g. Motorex Brake Fluid DOT 5.1) up to 5 mm

below the upper edge of the reservoir.

Mount the diaphragm, the cover and the screws and actuate the hand brake

lever until you feel the point of pressure again. Wipe off any overflowing or

spilled brake fluid with water.

– Actuate the hand brake lever until you feel the point of pressure again.

– Never use DOT 5 brake fluid! It is based on silicone oil and of a purple

color. Seals and brake hoses must be especially adapted to it.

– Store brake fluid out of reach of children.

– Brake fluid can cause skin irritation. Avoid contact with skin and eyes. If

you get brake fluid in your eyes, rinse with plenty of water and consult a

doctor.

– Don’t let brake fluid get in contact with paint, it is an effective 

paint remover.

– Use only clean brake fluid taken from a tightly sealed container.

Checking front brake pads (50 Mini SX)

Inspect the brake pads from in front of the vehicle. The linings must be at

least 1 mm (0.04 in) thick.

At their most worn point brake pad linings should not be thinner than 1 mm

(0.04 in), otherwise they could lead to brake failure. For your own safety don’t

put off having your brake pads changed.

If the brake pads are replaced too late so that the lining is partly or entirely

worn, the steel components of the brake pad will rub against the brake disc,

thereby imparing the braking effect and destroying the brake disc.

Replacing the front brake pads (50 Mini SX) *

Remove the front wheel (see front wheel chapter).

Press brake shoes apart with a suitable screwdriver to put the brake pistons

in their basic position.

Remove the lock washer 

[4]

from the screw as well as fixing screw 

[5]

and

take the brake shoes out of the brake caliper. Clean brake caliper thoroughly

with compressed air.

Mount the left brake shoe and fix with screw. Mount the right brake shoe and

tighten the screw to 4 Nm. Mount the lock washer. Align brake shoes, mount

front wheel (see chapter: Mounting the front wheel).

– It is very important to keep the brake disk free from oil and fatty matters.

Otherwise, the braking effect would be strongly reduced.

– After assembly, check if circlips have been fitted correctly.

– Do not unscrew any other screws on the brake caliper or you will have to

bleed the brake system.

– After working on the brake system always operate the hand brake lever to

apply the brake pads to the brake disk and create a point of pressure.

min.

1 mm

5 mm

1

1

2

3

5

4

Summary of Contents for 50 MINI ADVENTURE

Page 1: ...KTM Sportmotorcycle AG A 5230 Mattighofen www ktm com KTM Group Partner 4 2007 FOTO MITTERBAUER 50 MINI ADVENTURE 50 MINI SX OWNER S MANUAL 2008 3211221en 3211221en 3211221en...

Page 2: ...rtain models without previous notice KTM shall not be held liable for any deviations of availabil ity and or ability to deliver illustrations descriptions printing and or other errors The illustrated...

Page 3: ...cycle is sold SERVICE Observance of the service maintenance and tuning instructions for the engine and chassis specified in the Owner s Manual is a prerequisite for faultless operation and the avoida...

Page 4: ...ains Nevertheless driving the motorcycle like driving any other vehicle involves a potential risk Therefore please make sure that all fundamental precautions are taken Please also read the INFORMATION...

Page 5: ...hnical checks himself herself as well Whenever you go for a ride with your youngster keep in mind that the speed should be adjusted to your youngster and not the other way around Your youngster must u...

Page 6: ...determine the sag of the shock absorber 18 To determine the sag of the telescopic fork 18 Page Telescopic fork maintenance 50 Mini SX 19 Changing the telescopic fork oil 50 Mini SX 19 Telescopic fork...

Page 7: ...e number is stamped into the right half of the engine case next to the kickstarter Enter this number in the relevant field on page 1 Throttle grip The throttle grip is located on the right side of the...

Page 8: ...e Short circuit button The short circuit button 1 turns off the engine When pressing this button the ignition circuit is short circuited Filler cap To open it Turn filler cap counter clockwise To clos...

Page 9: ...cessory kit for kickstarter backwards operation is available Side stand Use your foot to swing the side stand forwards to the stop Make sure it rests securely on solid ground 1 Rebound damping functio...

Page 10: ...pending on the speed to recognize and avoid obstacles When riding through curves the rider should also look far ahead into the curve Pay attention to running in procedure Running in Even very precisel...

Page 11: ...the tank venting hose is free of kinks 3 CHAIN A loose chain was fall off the chain wheels an extremely worn chain may tear and insufficient lubrication may result in unnecessary wear of the chain an...

Page 12: ...is there fore recommended to drain the old fuel from the float chamber The engine will immediately start off when the float chamber is filled with new fuel Starting when the engine is warm 1 Open fue...

Page 13: ...rking the motorcycle that other persons will not burn themselves Close the fuel tap when leaving the motorcycle Otherwise the carburetor may get flooded and fuel will enter the engine The side stand i...

Page 14: ...eak down When you refuel the oil in fresh oil tank 1 should reach up to the A mark This amount of oil is enough for a full fuel tank The oil pump is mounted on the ignition cover and is powered by the...

Page 15: ...d lubricate Clean air filter and air filter box z z Brakes Check brake fluid level lining thickness brake discs 50 Mini SX z Check brake cables for damage z Check function adjust smooth operation free...

Page 16: ...smooth operation of all controls z Treat exposed metal components except for the brake and exhaust systems z with wax based anti corrosion agents Check all screws nuts and hose clamps for their tight...

Page 17: ...se jack up the motorcycle by the frame so that the front wheel is in the air Now try to move the fork forward and backward There should be no clear ance For readjustment release the two clamp screws 1...

Page 18: ...how the fork and shock absorber positions for a high seat position Fork tubes are plane with top of top triple clamp Bold cap Aluminium protrudes from the top of the top triple clamp The shock absorbe...

Page 19: ...sions A and B EXAMPLE Motorcycle jacked up dimension A 330 mm Motorcycle on ground with driver seated dimension B 285 mm Sag 45 mm 50 Mini SX shock absorber sag 50 mm 5 mm If the sag is lower the spri...

Page 20: ...fork Tighten the screws on the bottom of the sliding tubes to 30 Nm Fill in fork oil and assemble the fork see below Degrease the screws on the brake caliper and apply Loctite 243 Mount the brake cali...

Page 21: ...e gaskets and springs and reassemble the telescopic fork Tighten the screws at the underside of the slider tubes to 30 Nm Fill in fork oil and assemble the fork see below Insert the fork legs into the...

Page 22: ...to get your finger caught between the chain and the rear sprocket or other components Correct chain tension Release the hexagon nut of the wheel spindle 1 and turn the left and the right hexagon nut...

Page 23: ...kets may form in old brake fluids even at low temperatures causing the brake system to fail BRAKE DISC Due to wear the thickness of the brake disc in the area of the contact face 1 of the brake pads d...

Page 24: ...pads 50 Mini SX Inspect the brake pads from in front of the vehicle The linings must be at least 1 mm 0 04 in thick At their most worn point brake pad linings should not be thinner than 1 mm 0 04 in...

Page 25: ...ng the braking effect and destroying the brake drum 10 15 mm min 50 mm 1 4 3 3 2 Adjusting the front wheel brake cable 50 Mini Adventure The hand brake lever should travel between 10 and 15 mm 0 4 0 6...

Page 26: ...brake drum and brake shoes Brake drum and brake linings can be slightly roughened with an abrasive tape Removing and mounting the front wheel 50 Mini SX Jack the motorcycle up by the frame so that th...

Page 27: ...que corrected by a KTM dealer as soon as possible A loose axle may lead to an unstable driving behavior of your motorcycle Tires air pressure Tire type tire condition and air pressure level affect the...

Page 28: ...llow it to dry well Only press out the filter do not wring it out under any circumstances Oil the dry foam filter with a high grade filter oil Also clean the air filter box Check carburetor collar for...

Page 29: ...level first remove the plug 5 With the motorcycle parked in an upright position a small quantity of oil should flow out of the indicator opening 6 If oil must be added tilt the motorcycle and pour gea...

Page 30: ...Nm Mount a new gasket and position the clutch cover 2 Screw on the clutch cover with 6 M6x25 screws 1 and tighten to 10 Nm Move the transmission vent hose back in the original position Adjusting the c...

Page 31: ...item no 590 29 021 044 onto the clutch hub 6 with the M5x50 screws hold the extractor and remove the centrifu gal clutch from the crankshaft by screwing in the extractor screw Completely remove the ce...

Page 32: ...stration If only one disk is installed you can go ahead and use it The inner diameter of the centrifugal clutch drum may not exceed 84 4 mm new condition 84 0 mm 12 11 8 10 6 7 Assemble in the reverse...

Page 33: ...tion for more than a week it is therefore recommended to drain the old fuel from the float chamber The engine will immediately start off when the float chamber is filled with new fuel Close fuel tap l...

Page 34: ...carburetor if necessary replace float needle and adjust level Tighten jets High rpm misfiring Incorrect heat range spark plug or low quality spark plug Loose corroded or non conductive ignition socket...

Page 35: ...e away for longer periods of time please observe the following instructions Clean motorcycle thoroughly see chapter CLEANING Change engine oil old engine oil contains aggressive contaminations Let the...

Page 36: ...Oil drain plug M10 15 Nm Other engine bolts M5 7 Nm M6 10 Nm M8 30 Nm ENGINE 50 AC MINI SX 50 AC MINI ADVENTURE Design single cylinder 2 stroke engine with reed valve inlet Displacement 49 0 cm3 Bore...

Page 37: ...sion Central shock absorber White Power 03 18 9D 04 Central shock absorber Paioli Front brake Disk brake 160 mm 6 4 in Drum brake 90 mm 3 5 in Rear brake Drumbrake 90 mm 3 5 in Tires front rear 2 50x1...

Page 38: ...s 22 General tips and warnings for starting the motorcycle 9 Hand brake lever 50 Mini SX 7 How to change the handlebar position 17 Page Important information for parents about safe driving 4 Important...

Page 39: ...ENGLISH 36...

Page 40: ...KTM Sportmotorcycle AG A 5230 Mattighofen www ktm com KTM Group Partner 4 2007 FOTO MITTERBAUER 50 MINI ADVENTURE 50 MINI SX OWNER S MANUAL 2008 3211221en 3211221en 3211221en...

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