The symptom pattern

The jigsaw bogs down mid-cut, cuts in fits and starts rather than smoothly, or — easiest to confirm — you can actually see sparking through the motor vents when it’s running. Triton’s own manual for the TJS001 names this exact combination as the signature of worn carbon brushes: “loss of power, intermittent failure, or visible sparking.” All three point the same way, so any one of them is reason enough to check.

Replacing the brushes

This is a home job, not a workshop one — Triton’s manual gives it as a full numbered procedure. With the tool unplugged, remove the Brush Access Screw and pull off the cover at the rear of the tool. A smaller retaining screw lets you lift the brush frame clear by about 12mm; disconnect the electrical connector before sliding the old, worn brush out through the frame.

Fitting the new one is the same process in reverse: feed the new brush’s wire and connector through the frame first, seat the brush, then reconnect the electrical connector. Secure the frame back into its recess with its screw and check by eye that it’s sitting correctly — then do the exact same thing on the second brush. Triton’s manual is specific on this point: both brushes are always replaced together, never just the one that looks worse.

Refit the Base Cover and the Brush Access Screw, keeping the mains cable clear and the Variable Speed Dial lined up properly, then run the jigsaw with no blade fitted — slow first, then faster — to confirm it’s running cleanly before putting a blade back in and using it.

Verdict

Triton doesn’t deflect this one to a service centre as the only option; the manual lists an authorised Triton service centre as an alternative, not the default. A pair of carbon brushes costs very little set against a replacement 750W jigsaw, so once the sparking, power loss or intermittent cutting has confirmed it’s the brushes, this is a straightforward and cheap fix to do yourself.