Jan Siewert made a losing start to his tenure as Huddersfield head coach as Richarlison's third-minute strike was enough to secure a much-needed 1-0 win for 10-man Everton at the John Smith's Stadium
Tom Davies set up the Brazilian for the only goal of a cagey affair in West Yorkshire as Everton moved up to eighth in the Premier League to ease the pressure on manager Marco Silva
They were made to sweat on the result in the final 24 minutes as Lucas Digne was sent off for a professional foul on Adama Diakhaby, but Everton held on to just a third away win of the season
It is now 11 defeats in 12 games for Huddersfield, four games without a goal in all competitions, and the side are 11 points off 17th-placed Southampton with a significantly worse goal difference
Everton boss Silva made five changes to the side that were embarrassed by Millwall in the FA Cup last weekend, but in the absence of Paris Saint-Germain target Idrissa Gueye they made the perfect start
From a throw-in, Davies followed his pass to be slipped down the right by Bernard, and the young Englishman crossed for Richarlison to score at the second attempt after Jonas Lossl had kept his initial effort out
Huddersfield struggled to carve out any opportunities of note with Everton playing a higher line to minimise their threat from set pieces, and it was not until the 45th minute that the hosts had a shot as Steve Mounie dragged his effort from distance wide of Jordan Pickford's left-hand post
Digne had been on the pitch for just 11 minutes, replacing the injured captain Leighton Baines, when he was forced to cynically haul down Diakhaby, leaving referee Stuart Attwell with no option but to dismiss the Frenchman
From the resulting free-kick, Aaron Mooy, on his return to the side as a fellow second-half substitute after a seven-week absence, forced Jordan Pickford into a brilliant save down to his right
The England No 1 had to be alert once more to deny Elias Kachunga as he tipped the forward's header from Diakhaby's cross to safety - and Everton's defence withstood a late onslaught to bring much-needed respite for Silva
"I'm disappointed but I'm proud
 We had several chances and we couldn't have had a worse start
"But we developed our game, and that's what I'm really proud of as we've only had seven days to work together
"Today I'm disappointed because I saw why [Jordan] Pickford is England's No 1 goalkeeper
 He made some incredible saves from Mooy and also from Kachunga
" "It's an important result for us
 When you win away it's always important but it wasn't a fantastic performance
 Sometimes you have to win games with character and personality
"Twenty-five minutes with 10 players is always tough, and we've achieved three points that our players deserve
"After the red card, we had to be more compact, and we did that
 They had one direct free-kick and one header but they didn't have any other chances to equalise
 For that we deserved the three points
"After being on the receiving end of a chastening experience in hostile conditions against Millwall, a trip to face an inevitable aerial bombardment from Huddersfield was always likely to prove a stiff mental test for Keane, especially after Digne's sending off
But the centre-back produced a commanding display to minimise the threat of Steve Mounie, taking control of a fragile back line to protect Everton's obvious weakness this season with a high line on defensive set pieces
Silva appears to still be figuring out what his preferred option is at centre-half, but it increasingly looks like being one of either Kurt Zouma or Yerry Mina alongside Keane after a second clean sheet in three Premier League games
Huddersfield travel to face Chelsea at Stamford Bridge on Saturday while Everton host Wolves at Goodison Park, with both games kicking off at 3pm
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