Lifan LF150-7 won't turn over By NC guy (Read 5,577 times)

[NC guy]

Throwing myself at the mercy of any kind soul willing to help walk a noob through some basic diagnostic steps for a Lifan LF150-7 I inherited. Its in great external condition but it sat idle for over 6+ mos without running. Battery holds a 12.5V charge, but it only cranks...won't start.

I'm willing to spend some money on it but not a boatload, so I'd like to try working my way through it in the hopes it could be a simple.

Here is the unit: www.lifan-ami.com/production.asp?tid=76&id=9

(you need to use translate function in your browser as its in French)

Dimension ((L × B × H mm) 2150 * 720 * 1410
Wheelbase (mm): 1225
Min. Earth shift: 100
Dry Weight:115kg
Seat height: 950
Reserve Capacity: 11.5
Engine Type: Single-cylinder, forced air-cooled, four-stroke
Engine model: 1P57QMJ/1P52QMI
Bore × stroke: 57.4mm*57.8mm/52.4mm*57.8mm
Exhaust volume: 149.6ml/124.4ml
Max power: 7.2kw/7500r/min/6.0kw/7000r/min
Max torque:. 9.0Nm/6000r/min/7.65Nm/6000r/min
Clutch: dry auto-centrifugal
Lubricant: Pressure / splash
Start: kick / electric
Ignition: CDI
Transmission: automatic
Max speed.: 85km / h/80km / h
Consumption of gasoline (l /100km) ≤2.9L /100km/ ≤2.8L/100km
Front Type Size and Air Pressure: 4.00-12/196KPa
Rear Type Size and Air Pressure: 4.00-12/220KPa
Steering angle: ≥ 15 °
Index exhaust: CO ≤ 3.8% ; HC ≤ 800ppm
Performance start: ≤ 15s
Braking system (front / rear): disk
brake Performance: ≤7m/30km / h

[jct842]

Does it turn over with the kick starter? If not remove spark plug and try. You did not give enough information to really help. The starter can be made to spin by jumping the starter solenoid with a pliers but you don't say what you hear when turning key. Does it click? If it is turning over but not starting does it have a spark?
Tell us more.

[tvnacman]

does anything work (electrical) ?

start with fuses are the battery connections tight ?

John

[kz1000st]

Are you squeezing the rear brake when you press the starter button? Turning the key won't start it, it's not like a car.

Wait, that's a motorcycle. Where are you? They weren't sold here in the States.

commons.wikimedia.org/wiki/File:Lifan_LF150-7_blue.jpg

[kz1000st]

Does it look like the bike in the picture?

[NC guy]

Battery checks OK, fuse to + terminal OK. It will turn over and crank but not enough to start.

Here is the unit: www.lifan-ami.com/production.asp?tid=76&id=9

(you need to use translate function in your browser as its in French)

Dimension ((L × B × H mm) 2150 * 720 * 1410
Wheelbase (mm): 1225
Min. Earth shift: 100
Dry Weight:115kg
Seat height: 950
Reserve Capacity: 11.5
Engine Type: Single-cylinder, forced air-cooled, four-stroke
Engine model: 1P57QMJ/1P52QMI
Bore × stroke: 57.4mm*57.8mm/52.4mm*57.8mm
Exhaust volume: 149.6ml/124.4ml
Max power: 7.2kw/7500r/min/6.0kw/7000r/min
Max torque:. 9.0Nm/6000r/min/7.65Nm/6000r/min
Clutch: dry auto-centrifugal
Lubricant: Pressure / splash
Start: kick / electric
Ignition: CDI
Transmission: automatic
Max speed.: 85km / h/80km / h
Consumption of gasoline (l /100km) ≤2.9L /100km/ ≤2.8L/100km
Front Type Size and Air Pressure: 4.00-12/196KPa
Rear Type Size and Air Pressure: 4.00-12/220KPa
Steering angle: ≥ 15 °
Index exhaust: CO ≤ 3.8% ; HC ≤ 800ppm
Performance start: ≤ 15s
Braking system (front / rear): disk
brake Performance: ≤7m/30km / h

[tvnacman]

this will take away the kickbacks on high compression engines .

www.testedscooterparts.com/product_info.php?cPath=462_463&products_id=21475786

above is for ac ignition I have it for dc also .

John

[tvnacman]

Dec 16, 2013 12:54:23 GMT -6 NC guy said:

I have no clue what your post means other than to sell something.

oops I thought you were having kickback problems .

John

[NC guy]

I get it to crank but it won't start.

[tvnacman]

have you checked for compression , spark and fuel ?

John

[NC guy]

How do I check compression and spark? Tank has fuel...not filled

[tvnacman]

pull the coil wire put a spark plug in it and hold the threads to the engine , crank and see if you see spark should be blue .

to check for compression pull the spark plug put your finger over the hole tight crank and see if it pushes your finger off .

John

[NC guy]

Thanks - will test both and get back

[epyon96r]

If sat for a while, maybe a carb cleaning?

[NC guy]

agreed as well...my brother said he had to shoot some spray ether in carb to get it going the last few times before it sat for so long...

CDI was replaced 2-3 years ago.