Fixing an Indirect Diesel Shop Heater MH1000ID, HS1000ID

Difficulty Level (Easy, Medium, Hard, Insane):
Medium

Process:
This is for a Mr. Heater MH1000ID indirect diesel heater, made by Enerco similar to HeatStar model HS1000ID.

I had to test the following items:

1. Low-temperature thermal cut-off switch
2. High-temperature thermal cut-off switch
3. Fuel lines
4. Fuel pump
5. Fuel pump solenoid
6. Fuel nozzle
7. Ignitors
8. Air pressure sensor
9. Photocell

After everything was said and done, the reason the heater wasn't working was two-fold:

1. The fuel filter INSIDE of the fuel pump was clogged
2. The ignitors were dirty and misaligned

It took me quite a while to go through everything but I was glad that it was just some cleaning that had to be done. Having said that, the diagnostics would have cost me close to $350 bucks so I'm glad I ventured into trying to fix it myself

Videos:

 
Pictures:

The heater when I first got it

Specs of the heater

The insides of the heater

The diesel fuel pump

Close-up of the fuel nozzle and the ignitors

The fuel filter housing with the missing fuel filter

Running the heater

After the flue was painted

Flue gases vented outside

Close-up of air-gapped exhaust flue

Outside view of air-gapped flue

Tools:
Screwdriver
Cordless drill
Wrenches
Pliers
Scotch-brite abrasive pads

Materials:
N/A

Cost:
$0.00

Time:
5 hrs

Savings:
$1000

Conclusion:

It works great. Now I just have to figure out how to deal with the exhaust gas flue