John deere lr135

[gulli]

briggs & stratton 21a907 0167 el 050105za

 

[StarTech]

Engine Specifications​

Model Number21A907-0167-E1

Engine Specifications​

Engine Fuel	Gasoline
Configuration	Vertical
Cylinders	One
SKU	21A907-0167-E1
Gross Horsepower*	13.00
Air Cleaner	AIR CLEANER, DUAL ELEMENT
Air Cleaner Cover	AIR CLNR COV COL 290 - SATIN B
Bearings	BEARINGS, PLAIN PTO
Blower Housing	TRIM RING, 290 SATIN BLACK
Bore Type	Sleevebo
Bore Size	3.440
Stroke	2.260
Casing Clamps	CASING CLAMP & SCREW, OPPOSIT
Controls Groups	CONTROL GROUP 01, MODEL
Cylinder Head	CYLINDER, ALUMINUM W/C.I.SLEEVE
Deflectors	DEFLECTORS, WITHOUT
Dipsticks	DIPSTICK, OPPOSITE CA
Oil Drain	OIL FILL, OPPOSITE
Flywheel	FLYWHEEL, LOW MASS EQUIP FOR ELEC START
Fuel System	FUEL SYSTEM, WITHOUT FUE
Exhaust	MUFFLER, WITHOUT
Spark Plug	SPARK PLUG, EMC "Q"
Starting System	STARTER, 12 VOLT REGULAR

Technical Specifications​

Model Series	21A9
Displacement	344
Oil Capacity	48 oz (1.4 l)
Valve Configuration	OHV
Flywheel Torque	100 lb/ft (135.5 Nm)
Governor Arm Torque	40 lb/in (4.5 Nm)
Carb Mount	70 lb/in (8.0 Nm)
Plug Gap	0.03 in (0.75 mm)
Intake Valve	.003-.005 in (.08-.13 mm)
Exhaust Valve	.005-.007 in (.13-.18 mm)
Idle Speed	1750
Air Gap	.010-.014 in (.25-.36 mm)
Flywheel Puller Part	19203
Flywheel Holder Part	19433
Connecting Rod Torque	150 lb/in (17.0 Nm)
Sump Torque	200 lb/in (22.5 Nm)
Head Torque	220 lb/in (25.0 Nm)

Crankshaft Specifications​

Service Part Number	697390
PTO Type	Straight
PTO Woodruff Key	-
PTO Keyway #1 (in)	0.25 x 2.688 x 0.146
PTO Keyway #1 (mm)	6.35 x 68.275 x 3.708
PTO Keyway #2 (in)	-
PTO Keyway #2 (mm)	-
PTO Thread Size	0.438-20 UNF
PTO Diameter (in)	1
PTO Diameter (mm)	25.4
PTO Length (in)	-
PTO Length (mm)	-

And attached is the engine's IPL. Sorry not available in German, just English and Chinese on this end.

 

[gulli]

That is what i need .

Thank you very mutch

 

[gulli]

Today I finally had some time to work on the engine again.
I removed the cylinder head to see what was going on.
I found two problems: the intake valve is not sealing properly in the cylinder head, and the crankcase breather also allows air to pass in both directions when I blow into it.
I’m going to lap the valves properly and clean the crankcase breather. Then we’ll see if the engine runs properly again.
The rest of the engin looks very good.

 

[gulli]

I have another silly question for you guys.
Can I get the crankcase ventilation off without removing the flywheel?
I didn't have much time today, I only saw one bolt, but I need to clean it properly.

 

[StarTech]

I kinda doubt it as one bolt is mostly under the flywheel. Plus you got to have the vertical clearance to remove the PCV.

 

[gulli]

Thank you for the response.
Today I cleaned the cylinder head and lapped both valves. They are now 100% sealed again.
It could well be that this has already solved the problem.
I’ll reinstall the cylinder head during the week and see if everything is working properly again.

 

[sgkent]

that is:

Metric:
Intake valve: 0.10
Exhaust valve: 0.15

Inches:
Intake valve: 0.004"
Exhaust valve: 0.006"

Published Specifications (Veröffentlichte Spezifikationen) for 21a907 0167 e1 050105za
Intake: .004: to .006"
Exhaust: .004" to .006"

Metric/German:
Intake: 0.1016 mm bis 0.1524 mm
Exhaust: 0.1016 mm bis 0.1524 mm

 

[gulli]

Thank you.
I’ll get back to you once I have everything assembled and can tell you how the engine is running.

 

[gulli]

Today i build all clean pices together. Tanks for help the mower works perfekt.

I am happy

Regards gulli