Secondary winding (spark plug wire) to fame 2k to 8k ohms. If infinity (open), then look for break in wire or boot, else internal secondary winding has failed.
This an ignition module so primary winding is not accessible. Check ignition kill wire. Disconnect kill wire at module and measure continuity of kill wire to engine frame. With Run/Stop switch in STOP position it should read zero ohms (a short). In RUN position it should read infinite ohms (open).
SOURCE: Echo backpack blower stops after 20 minutes
Make sure the fuel tank cap inlet valve is working properly, this will allow a vapor lock if it is not. Then check the fuel line in tank to make sure the pickup filter is not hung up in tank thereby allowing the fuel to get below the pickup. Also check the fuel line for holes. You can also try toro.com customer care, manuals and parts, type in model no. then get owners manual and see if in troubleshooting section it list this problem.
SOURCE: ho spark on a pb 403t backpack blower
Be sure you have no spark ( 90% of the units that come into my shop for repair with the complaint of no spark- have a fuel issue). Be sure the spark plug is good.
If no spark then remove the ground wire from the module and check for spark again. You must use the recoil starter- spinning by hand is not sufficient. If still no spark then replace module. If there is spark with the ground wire disconnected then there is a problem with the kill switch or a bad wire.
SOURCE: what is gas:oil mixture for Echo PB-500t blower?
50:1 ratio, 2.6oz of 2 cycle oil to 1 gallon gas
SOURCE: I have an Echo PB-500T blower that won't
Remove the in tank fuel filter and take it apart, the felt Echo uses on the filter clogs quickly. There is still a mesh screen filter in the assembly so make sure you put it all back together and reinstall the fuel filter into the tank.
My $350 Echo PB-500T seized up. I almost cried.
The solution was to drain the fuel tank.
Refill fuel tank with an 2-cycle Oli/gas mixture.
40:1 =3.2 oz to one-gallon gas, do not use Alcohol base gas.
Remove the spark plug.
Pour approximate 1/8 oz 2-cycle Oli into the spark plug hole.
Remove the pull cord assembly (4-bolts)
This reviled the crank shaft-Pull cord bracket
I use a large monkey wrench to turn the shaft (CW) Clock-wise.
Complete approximate 20 revolutions.
Reassemble, but don't install the spark plug yet.
Complete approximate 20 more revolutions
by pulling the pull cord.
Use q-tips to swab the top of the piston, as much as possible.
Install the spark-plug and crank, it will smoke for amount 7-10 minutes
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