Hello All,
I am getting a little frustrated with a second hand engine I have bought.
15.5hp OHV single cylinder briggs.
Model :
285H77 0173 E1 101701ZA
It didnt want to turn over and didnt have a spark.
I have adjusted the Valve clearance and swapped out the Coil.
Engine Now turns over as it should Sparks as it should.
I have looked for the Compression release bump on the cam and can see it working. The valves move as it should and it ' feels ' like it has good compression. I have cleaned the carb out (for good measure) as it had been sitting for 12 months.
Currently the engine will just not fire up. I have tried the tea spoon of fuel in the cylinder trick.
My next step is pull the head and check the piston and valves.
Before I do I was hoping for some advice as No matter how much i search I want a definitive answer on something.
On the end of he Valve stems ( underneath the rocker arms ) there are no little caps.
In the parts diagram, I can only see 1 pictured. in the repair manual it states replace if fitted, but being a second hand engine I have no idea if they were fitted and lost, or never there to begin with.
I thought ( hoped ) I had a bent push rod, pulled them out but they are both straight, then I checked the length of them.
The Steel 1 ( exhaust ) is slightly longer than the aluminium.
Only information Ive read online is if there is 1 cap fitted it goes on the exhaust, If my exhaust push rod was smaller I would put 1 on it and the rods would end up the same length, and all would make sense, but being as its the alum 1 which is shorter. to my engineers mind it could mean the intake valve isnt opening fully ( ie the thickness of the cap ) not getting quiet enough fuel, but as I say Ive put cleam fuel direct into the spark plug hole.
I may be getting bogged down worrying over something which isnt an issue.
My real question is can any 1 tell me if this engine should have 1 / 2 caps and
If this engine was missing 1 / 2 caps would this prevent it from starting?
I am getting a little frustrated with a second hand engine I have bought.
15.5hp OHV single cylinder briggs.
Model :
285H77 0173 E1 101701ZA
It didnt want to turn over and didnt have a spark.
I have adjusted the Valve clearance and swapped out the Coil.
Engine Now turns over as it should Sparks as it should.
I have looked for the Compression release bump on the cam and can see it working. The valves move as it should and it ' feels ' like it has good compression. I have cleaned the carb out (for good measure) as it had been sitting for 12 months.
Currently the engine will just not fire up. I have tried the tea spoon of fuel in the cylinder trick.
My next step is pull the head and check the piston and valves.
Before I do I was hoping for some advice as No matter how much i search I want a definitive answer on something.
On the end of he Valve stems ( underneath the rocker arms ) there are no little caps.
In the parts diagram, I can only see 1 pictured. in the repair manual it states replace if fitted, but being a second hand engine I have no idea if they were fitted and lost, or never there to begin with.
I thought ( hoped ) I had a bent push rod, pulled them out but they are both straight, then I checked the length of them.
The Steel 1 ( exhaust ) is slightly longer than the aluminium.
Only information Ive read online is if there is 1 cap fitted it goes on the exhaust, If my exhaust push rod was smaller I would put 1 on it and the rods would end up the same length, and all would make sense, but being as its the alum 1 which is shorter. to my engineers mind it could mean the intake valve isnt opening fully ( ie the thickness of the cap ) not getting quiet enough fuel, but as I say Ive put cleam fuel direct into the spark plug hole.
I may be getting bogged down worrying over something which isnt an issue.
My real question is can any 1 tell me if this engine should have 1 / 2 caps and
If this engine was missing 1 / 2 caps would this prevent it from starting?
